When to use 100 % human hair topper pieces? A little grey hair or minimal hair loss.Silght hair loss or some grey hair in the hairline.Severe hair loss or grey hair in the hairline. Topper base Type and base size: Middle Part--10*12cm silk base With Bangs--10*12cm silk base+10*12cm mono base(with headspin) Over Head--16*19cm mono base+machined(Natural Curl Hair Texture) Topper hair lenght and weight: 6Inch/10Inch/12Inch/14Inch/16Inch/18Inch/20Inch--27g、32g、35g、38g、40g、44g、45g、50g、55g、57g Hair texture/usage: Hight Quality 100% Remy Human Hair,Can be curled, straightened, and restyled as your own hair. Hair color: #1B Natural Black、#01 Jet Black、#02 Dark Brown、#04 Medium Brown、#06 Light Brown、#24 Natural Blonde、#27 Dark Blonde、#60 Platinum Blonde、#70 Bleach White、#613 Bleach Blonde、#4P27 Medium Brown&Dark Blonde、#12P613 Golden Brown&Bleach Blonde、#18P613 Light Ash Blonde&Bleach Blonde